package com.baomidou.springboot.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

/**
 * 全局的异常捕捉
 * @author majun
 *
 */
@ControllerAdvice
public class GlobalExceptionHandler {
	 @ExceptionHandler(value = Exception.class)
	    public void defaultErrorHandler(HttpServletRequest req, Exception e)  {
//	      // If the exception is annotated with @ResponseStatus rethrow it and let
//	      // the framework handle it - like the OrderNotFoundException example
//	      // at the start of this post.
//	      // AnnotationUtils is a Spring Framework utility class.
//	      if (AnnotationUtils.findAnnotation(e.getClass(), ResponseStatus.class) != null)
//	          throw e;
	//
//	      // Otherwise setup and send the user to a default error-view.
//	      ModelAndView mav = new ModelAndView();
//	      mav.addObject("exception", e);
//	      mav.addObject("url", req.getRequestURL());
//	      mav.setViewName(DEFAULT_ERROR_VIEW);
//	      return mav;
	      
	      //打印异常信息：
	       e.printStackTrace();
	       System.out.println("GlobalDefaultExceptionHandler.defaultErrorHandler()");
	 
	       /*
	        * 返回json数据或者String数据：
	        * 那么需要在方法上加上注解：@ResponseBody
	        * 添加return即可。
	        */
	       
	       /*
	        * 返回视图：
	        * 定义一个ModelAndView即可，
	        * 然后return;
	        * 定义视图文件(比如：error.html,error.ftl,error.jsp);
	        *
	        */
	  }
}
